Cybersecurity information-sharing arrangements
Directive on the security of network and information systems · UE 2022/2555
Cybersecurity information-sharing arrangements
1. Member States shall ensure that entities falling within the scope of this Directive and, where relevant, other entities not falling within the scope of this Directive are able to exchange on a voluntary basis relevant cybersecurity information among themselves, including information relating to cyber threats, near misses, vulnerabilities, techniques and procedures, indicators of compromise, adversarial tactics, threat-actor-specific information, cybersecurity alerts and recommendations regarding configuration of cybersecurity tools to detect cyberattacks, where such information sharing:
| (a) | aims to prevent, detect, respond to or recover from incidents or to mitigate their impact; |
| (b) | enhances the level of cybersecurity, in particular through raising awareness in relation to cyber threats, limiting or impeding the ability of such threats to spread, supporting a range of defensive capabilities, vulnerability remediation and disclosure, threat detection, containment and prevention techniques, mitigation strategies, or response and recovery stages or promoting collaborative cyber threat research between public and private entities. |
2. Member States shall ensure that the exchange of information takes place within communities of essential and important entities, and where relevant, their suppliers or service providers. Such exchange shall be implemented through cybersecurity information-sharing arrangements in respect of the potentially sensitive nature of the information shared.
3. Member States shall facilitate the establishment of cybersecurity information-sharing arrangements referred to in paragraph 2 of this Article. Such arrangements may specify operational elements, including the use of dedicated ICT platforms and automation tools, content and conditions of the information-sharing arrangements. In laying down the details of the involvement of public authorities in such arrangements, Member States may impose conditions on the information made available by the competent authorities or the CSIRTs. Member States shall offer assistance for the application of such arrangements in accordance with their policies referred to in Article 7(2), point (h).
4. Member States shall ensure that essential and important entities notify the competent authorities of their participation in the cybersecurity information-sharing arrangements referred to in paragraph 2, upon entering into such arrangements, or, as applicable, of their withdrawal from such arrangements, once the withdrawal takes effect.
5. ENISA shall provide assistance for the establishment of cybersecurity information-sharing arrangements referred to in paragraph 2 by exchanging best practices and providing guidance.
In Luxembourg, the competent authority for receiving the notification of participation in or withdrawal from a sharing arrangement is the ILR (Institut Luxembourgeois de Regulation), with GOVCERT and CIRCL playing an operational role in running sharing communities. The law of 28 July 2023 on cybersecurity, amended by the law of 28 July 2025, transposes Article 29 and confirms the voluntary nature of sharing while maintaining the declarative obligation of Article 29(4) towards the ILR.
Luxgap practice: pre-wire the gateway to CIRCL and its national MISP instance, and automate the ILR notification on each entry into or exit from a community to avoid any declarative omission during an inspection.
